Title :
A frame-work for live multicast of video streams over the Internet
Author :
Chaddha, Navin ; Gupta, Anoop
Author_Institution :
Comput. Syst. Lab., Stanford Univ., CA, USA
Abstract :
This paper presents a frame-work for live multicast of video streams over the Internet. The overall system combines a scalable video compression algorithm, a cheap software only real-time video encoder and decoder, and a network unit. The scalable compression algorithm produces an embedded bit-stream to support decoders with various spatial and temporal resolutions. Bandwidth scalability with a dynamic range from a few Kbps to several Mbps is provided. The subjective quality of compressed frames improves significantly by the use of perceptual distortion measures. For cheap software only encoding and decoding we use hierarchical table-lookup vector quantization. Multiple multicast groups are used for the delivery of the scalable streams over the Internet
Keywords :
Internet; decoding; image resolution; rate distortion theory; table lookup; telecommunication channels; telecommunication computing; vector quantisation; video coding; visual communication; Internet; bandwidth scalability; compressed frames; dynamic range; embedded bit-stream; hierarchical table-lookup vector quantization; live multicast; multiple multicast groups; network unit; perceptual distortion measures; rate distortion performance; real-time video decoder software; real-time video encoder software; scalable video compression algorithm; spatial resolution; subjective quality; temporal resolution; video streams; Bandwidth; Compression algorithms; Decoding; Internet; Multicast algorithms; Real time systems; Software algorithms; Spatial resolution; Streaming media; Video compression;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.559417
